The human elbow is an example of a ____ joint
a. hinge
b. fulcrum
c. ball-and-socket
d. lever
e. ligament
ANSWER: a
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Which of the following is true of facilitated transport?
a. Energy must be used. b. Solutes move through the membrane unassisted. c. Solutes move up their concentration gradient. d. No energy is used during facilitated transport .
Four of the five answers listed below are trends in hominid evolution. Select the exception
a. ectothermy b. enhanced vision c. upright vertebral column d. omnivorous feeding behavior e. enhanced tool making
Which of the following is NOT true about the
hormone, HCG?
a. it is secreted by the amnion b. it encourages menstruation c. it causes the degeneration of the corpus luteum d. it can be detected beginning the third day e. all of these are not true about the hormone,
Mutations are changes to the information in DNA. What would happen to an enzyme's ability to function if a mutation changed the order of some of the amino acids in its polypeptide chain?
What will be an ideal response?